Eaton NZMH4-PX1250-TAZ Molded-Case Circuit Breaker 3-Pole 1250A 85KA

Eaton NZM4 molded-case circuit breaker, type NZMH4-PX1250-TAZ. 3-pole, rated current 1250 A, breaking-capacity class H, frame size NZM4 (up to 1600 A). Rated operational voltage 690 V AC; rated ultimate short-circuit breaking capacity (Icu) 85 kA at 400/415 V AC to IEC/EN 60947-2. Electronic trip unit — adjustable LSI protection with integrated energy metering and communication. Utilization category A, suitable for isolation.

Manufacturer part number (MPN)

NZMH4-PX1250-TAZ

Series

Eaton NZM4 (Moeller series NZM)

Type

Molded-case circuit breaker (MCCB)

Breaking-capacity class

H (high breaking capacity)

Number of poles

3-Pole

Rated current (In)

1250 A

Frame size

NZM4 (up to 1600 A)

Rated operational voltage (Ue)

690 V AC

Rated insulation voltage (Ui)

800 V

Rated ultimate short-circuit breaking capacity (Icu) at 400/415 V AC

85 kA

Trip unit / release

Electronic trip unit — adjustable LSI protection with integrated energy metering and communication

Utilization category

A

Suitable for isolation

Yes

Standard

IEC/EN 60947-2

EAN / GTIN

4015081875665

HS code

8536.20

Sales unit

pcs

Eaton catalogue number

189619

Depth

375 mm

Height

170 mm

Width

210 mm

Weight

19 kg

Compliances

RoHS conform

Certifications

IEC; IEC/EN 60947

Functions

Earth-fault protection; Systems, cable, selectivity and generator protection; ARMS maintenance mode; Integrated earth fault protection; Zone selectivity

Amperage Rating

1250 A

Application

525 V

Circuit breaker frame type

NZM4

Features

Protection unit; Motor drive optional

Release system

Electronic release

Ambient operating temperature - max

70 °C

Ambient storage temperature - max

70 °C

Ambient operating temperature - min

-25 °C

Equipment heat dissipation, current-dependent

173.44 W

Rated operational current for specified heat dissipation (In)

1250 A

Direction of incoming supply

As required

Earth-fault current setting (Ig) - max

1250 x In

Earth-fault current setting (Ig) - min

250 x In

Electrical connection type of main circuit

Screw connection

Handle type

Rocker lever

Instantaneous current setting (Ii) - max

37500 A

Instantaneous current setting (Ii) - min

2500 A

Isolation

300 V AC (between the auxiliary contacts); 500 V AC (between auxiliary contacts and main contacts)

Lifespan, electrical

2000 operations at 690 V AC-1; 3000 operations at 400 V AC-1; 3000 operations at 415 V AC-1

Number of operations per hour - max

60

Overload current setting (Ir) - max

1250 A

Overload current setting (Ir) - min

500 A

Overvoltage category

III

Pollution degree

3

Rated impulse withstand voltage (Uimp) at auxiliary contacts

6000 V

Rated impulse withstand voltage (Uimp) at main contacts

8000 V

Rated short-circuit making capacity Icm at 240 V

50/60 Hz

275 kA

Rated short-circuit making capacity Icm at 400/415 V

50/60 Hz

187 kA

Rated short-circuit making capacity Icm at 440 V

Rated short-circuit making capacity Icm at 525 V

50/60 Hz

143 kA

Rated short-circuit making capacity Icm at 690 V

50/60 Hz

100 kA

Rated short-time withstand current (t = 0.3 s)

19.2 kA

Rated short-time withstand current (t = 1 s)

19.2 kA

Short delay current setting (Isd) - max

10 A

Short delay current setting (Isd) - min

2 A

Short-circuit release delayed setting - max

10 A

Short-circuit release delayed setting - min

2 A

Short-circuit release non-delayed setting - max

15 A

Short-circuit release non-delayed setting - min

2 A

Short-circuit total breaktime

< 25 ms (≦ 415 V); < 35 ms (> 415 V)

Voltage rating

690 V - 690 V

Climatic proofing

Damp heat, cyclic, to IEC 60068-2-30; Damp heat, constant, to IEC 60068-2-78

Degree of protection

IP20; IP20 (basic degree of protection, in the operating controls area)

Degree of protection (IP), front side

IP40 (with insulating surround); IP66 (with door coupling rotary handle)

Degree of protection (terminations)

IP00 (terminations, phase insulator and strip terminal); IP10 (tunnel terminal)

Lifespan, mechanical

10000 operations

Mounting Method

Built-in device fixed built-in technique; Fixed

Number of auxiliary contacts (change-over contacts)

0

Number of auxiliary contacts (normally closed contacts)

0

Number of auxiliary contacts (normally open contacts)

0

Position of connection for main current circuit

Front side

Protection against direct contact

Finger and back-of-hand proof to VDE 0106 part 100

Shock resistance

15 g (half-sinusoidal shock 11 ms)

Optional terminals

Connection on rear. Strip terminal. Tunnel terminal

Standard terminals

Screw connection

Terminal capacity (aluminum stranded conductor/cable)

50 mm² - 240 mm² (4x) at 4-hole tunnel terminal

Terminal capacity (control cable)

0.75 mm² - 2.5 mm² (1x); 0.75 mm² - 1.5 mm² (2x)

Terminal capacity (copper stranded conductor/cable)

50 mm² - 185 mm² (4x) direct at switch rear-side connection; 120 mm² - 185 mm² (1x) direct at switch rear-side connection

Standard

Eaton NZM

HS Code

8536.20

• EAN 4015081875665
• SAP 1200767000
• Code 83923701